Javkhlant Formation

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Javkhlant Formation
Stratigraphic range: Santonian-Campanian
~85 Ma
↓
TypeGeological formation
OverliesBayan Shireh Formation
Thickness380 m (1,250 ft)
Lithology
PrimaryMudstone
OtherSandstone, conglomerate
Location
Coordinates44°24′N 109°24′E / 44.4°N 109.4°E / 44.4; 109.4Coordinates: 44°24′N 109°24′E / 44.4°N 109.4°E / 44.4; 109.4
Approximate paleocoordinates44°36′N 98°48′E / 44.6°N 98.8°E / 44.6; 98.8
RegionDornogov
Country Mongolia
Type section
Named byKhand et al.
Year defined2000
Javkhlant Formation is located in Mongolia
Javkhlant Formation
Javkhlant Formation (Mongolia)

The Javkhlant Formation is a geological formation in Mongolia whose strata date back to the Late Cretaceous possibly Santonian to Campanian. Ceratopsian, ornithopod and theropod remains been found in the formation. A prominent fossilized therizinosauroid nesting site is also known from the formation.

Paleobiota of the Javkhlant Formation[]

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs[]

Genus Species Location Stratigraphic Position Material Notes Images
Albinykus A. baatar Khugenetslavkant "Partial hindlimbs and pelvic girdle."[1] An alvarezsaurid. Albinykus LM.png
Haya H. griva Khugenetslavkant "Skull with partial skeleton of multiple specimens."[2] A primitive ornithopod. Haya griva NT.jpg
Therizinosauroidea indet. Indeterminate "Large nesting site composed by more than 10 egg clutches in several nests."[3][4] A nesting area laid by a colony of therizinosauroids.
Neoceratopsia indet. Indeterminate Khugenetslavkant "Embryonic remains enclosed within an isolated egg."[5] A neoceratopsian.
Yamaceratops Y. dorngobiensis Khugenetslavkant, Shine Us Khuduk Shine Us Khuduk red beds "Skull with partial skeletons."[6] A neoceratopsian. Yamaceratops BW.jpg

See also[]

  • List of dinosaur-bearing rock formations

References[]

  1. ^ Nesbitt, Sterling J.; Clarke, Julia A.; Turner, Alan H.; Norell, Mark A. (2011). "A small alvarezsaurid from the eastern Gobi Desert offers insight into evolutionary patterns in the Alvarezsauroidea". Journal of Vertebrate Paleontology. 31 (1): 144–153. doi:10.1080/02724634.2011.540053.
  2. ^ Makovicky, Peter J.; Brandon M. Kilbourne; Rudyard W. Sadleir; Mark A. Norell (2011). "A new basal ornithopod (Dinosauria, Ornithischia) from the Late Cretaceous of Mongolia". Journal of Vertebrate Paleontology. 31 (3): 626–640. doi:10.1080/02724634.2011.557114.
  3. ^ Kobayashi, Y.; Lee, Y.; Barsbold, R.; Zelenitsky, D.; Tanaka, K. (2013). "First record of a dinosaur nesting colony from Mongolia reveals nesting behavior of therizinosauroids". In Maxwell, E.; Miller-Camp, J.; Anemone, R. (eds.). 73rd Annual Meeting of Society of Vertebrate Paleontology. Los Angeles. p. 155.
  4. ^ Tanaka, K.; Kobayashi, Y.; Zelenitsky, D. K.; Therrien, F.; Lee, Y.-N.; Barsbold, R.; Kubota, K.; Lee, H.-J.; Tsogtbaatar, C.; Idersaikhan, D. (2019). "Exceptional preservation of a Late Cretaceous dinosaur nesting site from Mongolia reveals colonial nesting behavior in a non-avian theropod". Geology. 47 (9): 843−847. doi:10.1130/G46328.1.
  5. ^ Balanoff, A. M.; Norell, M. A.; Grellet-Tinner, G.; Lewin, M. R. (2008). "Digital preparation of a probable neoceratopsian preserved within an egg, with comments on microstructural anatomy of ornithischian eggshells" (PDF). Naturwissenschaften. 95 (6): 493−500. Bibcode:2008NW.....95..493B. doi:10.1007/s00114-008-0347-2. PMID 18347769.
  6. ^ Eberth, D.A.; Kobayashi, Y.; Lee, Y.N.; Mateus, O.; Therrien, F.; Zelenitsky, D.K.; Norrell, M.A. (2009). "Assignment of Yamaceratops dorngobiensis and associated redbeds at Shine Us Khudag (eastern Gobi, Dorngobi Province, Mongolia) to the redescribed Javkhlant Formation (Upper Cretaceous)". Journal of Vertebrate Paleontology. 29 (1): 295–302. doi:10.1080/02724634.2009.10010384
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